The mayor said there will be no exceptions to the city ordinance limiting work to the hours of 8 a.m. to 8 p.m.

That’s followed by this quote from Mayor Rahm Emanuel:

“You know the city ordinance is clear. You can’t have 24-hour building. That’s number one. Number two, they haven’t even proposed anything. The only people they’ve proposed it to are the newspapers. So I have nothing to respond to,” Emanuel said Tuesday.
He also said he wanted to talk to Ald. Tom Tunney about the situation.

It sounds like the mayor was reacting to what was reported from yesterday’s tour, not from any negotiations between the team and the city — the mayor says he hasn’t even been asked yet.